DK47462C
(en )
1933-06-19
Suction device in stone and clay mixed sand and gravel material.
FR775035A
(en )
1934-12-18
Crusher for gravel, stones and the like
FR747840A
(en )
1933-06-24
Tiles, rubble stones and slabs for construction
FR748927A
(en )
1933-07-13
Openwork and hollow paving stone, in cement, for pavement
FR758040A
(en )
1934-01-09
Improvements in machines for the treatment of sand, gravel, stones and all similar materials
CA327727A
(en )
1932-11-22
Sand and gravel spreader
AU565822A
(en )
1922-07-04
Improvements in and connected with concrete blocks or stones for building purposes
FR719148A
(en )
1932-02-02
Improvement in slabs and concrete blocks
ES125691A1
(en )
1932-03-16
Composition of Tripoli-based material in combination with cement.
GR2824B
(en )
1930-07-09
MIXING MACHINE FOR CONCRETE (CONCRETE) AND OTHER BUILDING MATERIAL.
ES97289A1
(en )
1926-05-16
Improvements in the manufacture of concrete and similar materials.
FR827804A
(en )
1938-05-04
Paving for roads, yards, quays and various applications
GR1231B
(en )
1926-07-08
IMPROVEMENTS IN TYPES OF TILES AND BRICKS.
FR693044A
(en )
1930-11-14
Extendable formwork for conduits and similar structures in concrete, masonry or other material
FR625184A
(en )
1927-08-04
Machine for tamping paving stones and similar materials
FR41218E
(en )
1932-12-02
Fork shovel for shoveling gravel, dust and similar materials
FR887413A
(en )
1943-11-12
Sand and gravel mixer
ES127405A1
(en )
1932-08-16
Improvements in the paving of roads, roads, floors and similar.
GR3360B
(en )
1931-09-29
MANUFACTURE OF CONCRETE STONES, CONCRETE BUILDINGS AND CONCRETE TILES FOR THE CONSTRUCTION OF PERMANENT ROADS.
FR644108A
(en )
1928-10-02
Paving stone refinements
DK43791C
(en )
1931-03-02
Procedure for driving down cladding pipes and for casting concrete piles in the ground.
AU2029229A
(en )
1930-06-10
An improved cement penetration machine for use in road making and similar purposes
FR759910A
(en )
1934-02-13
Artificial paving stone for paving sidewalks and other applications
FR827902A
(en )
1938-05-06
Portable device for mixing concrete, cement, fertilizers, etc.
AU2159025A
(en )
1925-02-05
x Improvements in concrete and like roadways